Heater for the intake-manifolds of internal-combustion engines.



B. N. PARRISH. HEATER FOR THE INTAKE MANIFOLDS OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. 9, I917- R a w 1 WM m 5 m M 2 W w NO! T P l. T m N A d m n m 2 h 1 vi B U 2 f x H m m n 8 4 g 0 4 m 1 w BERT N. PARRISH, F JACKSON, MICHIGAN.

' HEATER FOR THE INTAKE-MANIFOLDS OF INTERNAL-COMBUSTION ENGINES.

/ Application filed April 9, 1917. Serial No. 160,761.

I To all whom it may concern:

Be it known that I, BERT N. PARRISH, a

citizen of the United States, residing at Jackson, county of Jackson, State of Mich- 1gan, have invented certain new and useful Improvements in Heaters for the Intake- Manifolds of Internal-Combustion Engines, of which the following is a specification.

This invention relates to improvements in heaters for the intake manifolds of internal combustion engines.

The main objects of the invention are:

First, to provide an electrical heater which may be applied to the intake manifold. of an internal combustion engine to heat the manifold and thereby facilitate the starting of the engine. 1

Second, to provide a heater of the type referred to above, which may be easily and quickly adjusted to manifolds of different sizes and designs.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is .a plan view of a manifold equipped with my improved heater.

Fig. II is an enlarged detail transverse section taken on a line corresponding to line 22 of Fig. I.

Fig. III is a plan view of my improved heater, the members of which are shown in extended relation.

Fig. IV is an enlarged detail section taken on a line corresponding to line H of Figs.

I and III.

Fig. V is an enlarged detail section taken on a line corresponding to line 5-5 of Fig. IV, the inner sheet of insulation being removed to expose the heating coil.

Fig. VI is a diagrampf the electrical connections between my improved heating element and a source of current.

In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows-at the ends of the section lines.

Referring to the drawing, the reference character 1 indicates the intake manifold of an internal combustion engine. My improved heater, as shown in Figs. II and III, comprises two similar heating members 2, each of which is formed from a plate of brass or other metal having a central longitudinal channel 3 pressed therein to receive the heating element. The heating element 4; may be formed from any of the well-known resistant materials and is insulated from the plate by means of a comparatively thick strip of heat insulating material 5 and a sheet of mica 6. The heating element is retained in the channel by means of a comparatively thin strip of mica 7 and a brass heating plate 8 having the extending tongues 9 which are bent back on the outer side of the plate, as shown in Figs. I, III and IV. The ends of'the heating element project outwardly through holes 10 in the insulating strips 5 and 6 and the plates. The ends of the heating element are connected to the wires 11 and 12, which connect the heating element in series with a battery 13 or other similar source of current mounted on the vehicle. A controlling switch 14, which may be mounted upon the dash 15, as shown in Fig. I, or in any othersuitable position, is provided. The ends of the conductors 11 and 12 are secured to the heater by means of tongues 16 which are punched from the channels and turned back over the ends of the conductors, as shown in Figs. I, III and IV.

loop 16, punched from the bottom of the channels, receives the flexible metal strap of insulation 7 and the brass heating plate 8 to the walls of the intake manifold. The

Specification of Letters Patent. Patented Sept. 25, 1917..

walls of the manifold quickly become heated and the explosive charge passing therethrough is effectively vaporized and is not condensed as occurs when the manifold is below certain temperatures.

The supporting plates of the heater, being of flexible material, may be readily conformed to contact with the Walls of the manifold and with manifolds of different diameters and shape, the flexible attaching strap as I believe the disclosure made will enable those skilledin the art to which my invention relates to embody or adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a structure of the class described, the combination of a pair of heating members, each comprising a supporting plate having a channel-like recess formed therein, said plates being of bendable material so that they may be conformed to a manifold and having strap loops punched therefrom, a securing strap of flexible metal disposed throughsaid loops and provided with means for adjustably connecting its ends, an electrical heating element disposed within said recess and insulated from said plate, an insulating sheet disposed over said heating ele ment, a metal heating and retaining plate disposed over said heating element and said insulation therefor and having its ends engaged over the edges of said supporting plate, and tongues formed on said supporting plate to engage the ends of electrical conductors connected to said heating element. i

2. In a structure of the class described, the combination of a pair of heating members, each comprising a supporting plate having a channel-like recess formed therein, said plates being of bendable material so that they may be conformed to a manifold and having strap loops punched therefrom, a

securing strap of flexible metal disposed through said loops and provided with means for adjustably connecting its ends, an electrical heating element disposed Within said recess and insulated from said plate, an insulating sheet disposed over said heating element, a metal heating and retaining plate disposed over said heating element and said insulation therefor and having its ends engaged over the edges ofsaid supporting plate.

3. In a structure of the class described, the combination of a pair of heating mem- ,bers, each comprising a supporting plate having a channel-like recess formed therein, said plates being of bendable material so that they may be conformed to a manifold,

- means for binding said plates upon a manifold, an electrical heating element disposed within said recess and insulated from said plate, an insulating sheet disposed over said heating element, a metal heating and retaining plate disposed over said heating element and said insulation therefor and having its ends engaged over the edges of said supporting plate, and tongues formed on said supporting plate to engage the ends of electrical conductors connected to said heating element.

4. In a structure of the class described, the combination of a pair of heating members, each comprising a supporting plate having a channel-like recess formed therein, said plates being of bendable material so that they may be conformed to a manifold, means for binding said plates upon'a manifold, an electrical heating element disposed within said recess and insulated from said plate, an insulating sheet disposed over said heating element, a metal heating and retaining plate disposed over said heating element and said insulation therefor and having its ends engaged over the edges of said supporting plate.

5. In a structure of the class described, the combination with a manifold of an internal combustion engine, of a pair of heating members secured thereto and each comprising a supporting plate having a channellike recess formed therein, a heating element disposed in said recess and insulated y from said supporting plate by a strip of heat and electrical insulating material, the ends of said heating elements being disposed outwardly through said insulating strip and plate, a strip of insulation dis posed over said heating element to insulate it from the Walls of such manifold, a metal heating plate disposed overrsaid last-mentioned insulating strip and having its ends folded over the edges of said supporting plate whereby said heating element and heating strips are retained in position, and means for connecting and disconnecting said heating elements with a source of electrical supply. i

6. In a structure of the class described,

the combination with a manifold of an internal combustion engine, of a pair of heating members secured thereto and each comprising a supporting plate having a recess therein, a heating element disposed in said recess and insulated from said supporting plate by a strip of heat and electrical insulating material, a strip of insulation disposed over said heating element to insulate it from the walls of such manifold, a metal heating plate disposed over said last-mentioned insulating strip, and means for connecting and disconnecting said heating elements with a source of electrical supply.

.-7. In a structure of the class described, the combination with a manifold of an internal combustion engine, of a heating member secured thereto andcomprising a.bendable supporting plate adapted to be conformed to the manifold, a heating element mounted Within said plate and insulated therefrom and from the manifold, and

tongues struck from said plate for anchoring the ends of conductors.

8. In a structure of the class described, the combination of a pair of. heating members, each comprising a supporting plate having a recess formed therein, said plates being of bendable material so that they may be conformed to a manifold and having loops punched therefrom, a securing strap of flexible metal disposed through said loops and provided With means for 'adjustably connecting its ends, and an electrical heating element disposed within said recess and insulated from said plate.

9. In a structure of the class described,

the combination of a heating member comprising a supporting plate of thin bendable metal adapted to be conformed to a manifold and provided With a channel-like recess having a securing strap engaging loop struck from the bottom thereof, an electrical heating element disposed in said recess and insulated from said plate, and a heating plate disposed over said heating element and insulated therefrom.

10. In a structure of the class described, the combination with an insulated electrical heating element, of a housing therefor having flexible heat conducting extensions, and means for holding said extensions to a support.

In Witness whereof, I have hereunto set my handand seal in the presence of two Witnesses.

BERT N. PARRISH. [1,. 8.]

Witnesses:

MARGARET L. GLASGOW, LUELLA G. GREENFIELD. 

